4-Bromo-6-(difluoromethyl)-3-hydroxy-2-nitropyridine
5-Bromo-4-(difluoromethyl)-3-hydroxy-2-nitropyridine
3-Bromo-5-(difluoromethyl)-6-hydroxy-2-methylpyridine
2-Bromo-5-(difluoromethyl)-3-hydroxy-6-methylpyridine
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